Perfect Binary Tree

Famous quotes containing the words perfect and/or tree:

    By the “mud-sill” theory it is assumed that labor and education are incompatible; and any practical combination of them impossible. According to that theory, a blind horse upon a tread-mill, is a perfect illustration of what a laborer should be—all the better for being blind, that he could not tread out of place, or kick understandingly.... Free labor insists on universal education.
    Abraham Lincoln (1809–1865)

    That sound, everywhere about us, of the sea—
    the tree among its tresses has always heard it,
    and the horse dips his black body in the sound
    stretching his neck as if towards drinking water ...
    Denise Levertov (b. 1923)